Duratia 60 mg Dapoxetine pill is an effective solution for premature ejaculation problem. Read, & know its details like its price, use, side effects. Elimination of dapoxetine is biphasic. The initial half-life for 30 and 60 mg doses of dapoxetine is approximately 1.31 and 1.42 hours respectively and 18.7 and 21.9 hours for the terminal half-life, respectively (80).